WorksheetsBiotechnology and Recombinant DNA Technology
Total questions: 20
Worksheet time: 10mins
What does traditional biotechnology primarily involve?
A) Genetic modification of crops
B) Fermentation by microorganisms
C) Tissue culture techniques
D) Industrial use of enzymes
In the context of plant physiologists' roles in new technologies, what is NOT a focus?
A) Improving crop yield
B) Increasing resistance to herbicides
C) Enhancing vegetative propagation
D) Producing pharmaceuticals from animal cell cultures
What has modern plant biotechnology been based on?
A) Traditional farming methods
B) Advances in molecular genetics and recombinant DNA technology
C) Chemical engineering principles
D) Selective breeding of crops
How do restriction endonucleases contribute to recombinant DNA technology?
A) They produce restriction fragments with blunt ends.
B) They cut DNA at specific recognition sites.
C) They enhance the expression of target genes.
D) They facilitate the synthesis of plasmids.
What is the function of sticky ends in recombinant DNA technology?
A) They prevent DNA ligation.
B) They allow base pairing with other sticky ends.
C) They degrade DNA fragments.
D) They inhibit gene expression.
Which bacterium causes crown gall disease and is used in plant genetic engineering?
A) Escherichia coli (E. coli)
B) Agrobacterium tumefaciens
C) Streptococcus pyogenes
D) Bacillus subtilis
What is the significance of "Golden rice"?
A) It produces gold-colored rice grains.
B) It's resistant to golden virus infection.
C) It aims to reduce vitamin A and iron deficiencies.
D) It's a high-value cash crop.
What is metabolic engineering focused on?
A) Altering the nutrition of animals
B) Enhancing cellular metabolism
C) Increasing atmospheric oxygen levels
D) Producing renewable fuels from plants
What is the primary purpose of molecular farming?
A) Producing food crops with longer shelf life
B) Generating pharmaceuticals using genetically modified crops
C) Enhancing the growth of industrial crops
D) Developing drought-resistant plant varieties
Which advantage does plant tissue culture offer in agriculture?
A) Rapid production of genetically identical plants
B) Resistance to herbicides in crop plants
C) Spontaneous generation of new plant species
D) Reduction of carbon emissions from crops
What is the primary goal of metabolic engineering?
A) Enhancing cellular metabolism
B) Developing renewable fuels
C) Modifying plant tissue structure
D) Producing genetically identical plants
How does molecular farming differ from traditional farming?
A) It involves planting crops on a molecular level.
B) It focuses on growing genetically modified animals.
C) It uses biological organisms for industrial processes.
D) It produces pharmaceuticals using genetically modified crops.
What is a potential application of metabolic engineering in agriculture?
A) Producing renewable fuels
B) Regenerating entire plants from a single cell
C) Enhancing resistance to viral diseases in crops
D) Modifying the fatty acid composition of crops
Why are plants considered useful in molecular farming?
A) They have high resistance to diseases.
B) They can be easily modified at the genetic level.
C) They offer a low-cost alternative for protein production.
D) They don't require sunlight for growth.
What is the significance of ethanol in the context of fuel?
A) It is a synthetic fuel derived from petroleum.
B) It is used as a raw material for plastic production.
C) It is a renewable fuel produced from agricultural crops.
D) It is a byproduct of coal combustion.
Which statement about renewable fuels is accurate?
A) They are primarily derived from fossil fuels.
B) They are known for causing pollution in the atmosphere.
C) They are not produced from a replenishable resource.
D) They include clean-burning fuels like ethanol and biodiesel.
What is a characteristic feature of sticky ends in recombinant DNA technology?
A) They inhibit DNA ligation.
B) They contain blunt ends.
C) They are double-stranded.
D) They allow base pairing with complementary ends.
What is the primary focus of plant tissue culture techniques?
A) Production of renewable fuels
B) Regeneration of entire plants from a single cell
C) Cloning of genetically modified animals
D) Enhancement of vegetative propagation
In genetic engineering, what is the function of Agrobacterium tumefaciens?
A) Causes crown gall disease in plants
B) Produces ethanol through fermentation
C) Enhances vegetative propagation in crops
D) Facilitates tissue culture techniques
How does metabolic engineering contribute to "Golden rice"?
A) Modifying rice grains to have a golden color
B) Altering the nutrition of rice plants
C) Reducing vitamin A and iron deficiencies in rice
D) Enhancing rice resistance to herbicides
